import java.util.LinkedList;
import java.util.Random;
import java.util.Scanner;
/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: GaoBo
 * Date: 2021-06-04
 * Time: 22:08
 */
public class Test {
    public static void main(String[] args) {
        Scanner scna = new Scanner(System.in);
        Random ran = new Random();
    }
}
